Indicating-valve.



G. A. HOWE.

. mmc/ITIN@ VALVE, APPLICATION FILED AUG.B. I9I,

Patented Mm'. IIb. 1919.

Fig. 1.

GLENN ARNOLD Howe, oF roarnannjonneon.

INDICATI'NG-VALVE.

Application ytiled August 8. 1917.. Serial No. 185.054.

Be it known that I, GLENN ARNOLD Howe, a citizen of the United States, and a resi- 'dent ofPortland, inthe county of Multnomah and State of Oregon, have invented new and useful Improvements in Indicating- Valves, of which the following is a specification.

My invention is an improvement in indicating valves, and has for its object to provide a valve adapted for use in pneumatic tires, wherein indicating mechanism is provided, designed to show the pressure 'existing in the interior of the tire, and without the necessity for uncoupling the pump or air connection to ascertain such pressure.

In the drawings: A.

Figure -1 is a longitudinal section of the improved valve; y

Fig. 2 is a front view of the upper portion of the valve;

Fig. 3 is a sectionon the line 3-3 of In thepresent embodiment of the invention, the valve vcasing 1 is fof the usual construction, having the flange 2 at' its inner end and the clamping nut 3 and the rim washer 4 for clamping the tube 5 between the vflange and the said washer and nut, the nut being threaded on to the casing.

The casing, in the present instance, is eX- ternally threaded throughout its length and a dust cap 6 has threaded engagement with the outer eIrd of the stem. The cap, as shown, has oppositely arranged sight openings 7 for permitting the tubular member Sto be' visible through the said sight openings. This tubular member 8 is movable in the body or casing, the extent of movement being, however, limited by a vset screw 9 which is threaded through the casing and which engages a longitudinally extending groove 10 in the tubular member.

An elastic sleeve 11 is arranged within the body, the inner end of the tubularmember.- 8 being recessed or count-erbored, as indicated at 12, and the adjacent end of the' sleeve 11 is held in place in the tubular member 8 by means lof' a hollow screw 13. The opposite end of the sleeve 11 is connected to the base pin 14 by means of a hollow screw 15, the inner end of the base pin having a head 16 which is counterbored to receive 4the end of the sleeve 11. Thus the tubular member 8 is connected to the base pin by the elastic sleeve. A coil spring 1'( Specification of Letters Patent.

.be noticed t Patented Mar. 18, 1919.

.in the position ot Fig. 1, but they may yield at a'predetermined pressure' to permit the tubular member 8 to move outwardly. As so'on'as th'is pressure is relieved the spring returns the arts to normal position. It will liat the tubular member- S is provided vvith scales 18 with which the outer end of the ,valve casing coperates as an indicator.

In use, the tire' is inflated, the tubular member 8 being graduallyrmoved outward, and/ this movement is not interfered with by the elastic sleeve, and as the numerals of the scalepass the outer end of the tubular member 8 thesenumerals will become visible in succession, 'showing the pressure'in theftire, it being understood that the scale is based on the Strength of the spring.

I claim:

1. A self registering inflation -valve comprisin a stem having co-a'xial large and small ores, the latter located adjacent to length, a hollow base pin interiitting the small bore, a tubular member slidably interv,

tting the outer end of the large bore' and having an external scale coperatingwith the outer end of the stem,- a 'valve within said tubular member, and a hollow eXible sleeve connecting the adjacentends of said tubular member and said base pin within the stem, said base pin having a connecting member externally of the in'ner end of the stem, whereby the flexibly connected base pin and tubular member as a whole maj.'A be inserted in, and removed from, the stemf v 2. Aself-registerin'g inflation valvecomprising a stem having co-aXialy large and. small bores. the latter located adjacent to its inneitend and the former extending Jfrnm rigidly con-r` vular member sto its outer end for thev major portion of its length, a hollow base pin interitting. the small bore and eXtendin through the small bore and connected to the inner end of the stem, a tubular member slidably intertting the outer yend of the large bore and having an external scale coperating with, the outer end of the stem, a valve within said tubular memberand. a hollow flexible sleeve connecting the'adjacent ends of lsaid tubular member and said base pin within the stem,

seicl` tubular member having e longitudinal. groove, and e set screw threaded lthrough the Well of the stem and extendingal; its inner end into seid groove, to deteoliebly connect the tubular member movably Within its limits in the siemv end prevent turning movements of-tloe said member with respect lo the stem. A l I 3. A. self-'registering inflation valve'ooni- @rising e hollow stem, e tubular member sli'lebly nteritting elle outer portion of the hollow of secl siem end having en external seele cooperating with the oujei end of the stem, en L ir valve Within seid ubular mem- Leer/,eer

n loer, e liolloiv basepin detachably Connected 15,

With the inner portion of the stem and hav- A ingiLs inner end opposing the inner end of thenbuler member,.,said base pin and said tubulelr member leaving their'said ,opposing ends oouner-laoreo and internally threaded, 4 2o a Hexible sleeve having its opposite endsextending into seid counter-bores, andvhollow soreivs hreeded into @he adjacent ends of the tubular member ond4 Jehe lloese pin to look H the said encls ofthe .seid sleeve n the colmi 25 ver-bores.

eignen Annone novvn; 

